Tiny,
Testing the MAF gets rather unwieldy as you can see....
. Testing Notes
. Testing Schematic
. Sensor Data
. DC1 - Check VPWR Circuit Voltage
. DC2 - Check MAF Sensor Ground
. DC10 - Check For Intermittent Sensor
. DC11 - Monitor MAF Circuit Under Simulated Road Shock
. DC12 - Check Vehicle Harness For Intermittent Opens or Shorts
. DC13 - Air Leak at MAF Sensor
. DC14 - Check Continuity of MAF and VPWR Circuits
. DC15 - Check MAF Circuit For Shorts to GND and MAF RTN Circuit
. DC16 - Check PWR GND Circuit Continuity
. DC17 - Check MAF RTN Circuit Continuity
. DC18 - Check MAF Circuit For Short to Ground
. DC19 - Check MAF Circuit Output
. DC20 - Check MAF Circuit Output
. DC21 Check For Other Diagnostic Trouble Codes
. DC22 - Rerun Self-Test W/MAF Sensor Disconnected
. DC23 Check MAF Circuit For Short to VPWR
You might take the MAF and housing inside and let it warmup overnight and then install it and see if it makes any difference! Just a thought!
Regards,
BT
